2-methoxycarbonylethyl 2-O-(3,4,6-tri-O-benzoyl-α-D-mannopyranosyl)-3,4,6-tri-O-benzoyl-1-thio-α-D-mannopyranoside 、
2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl bromide 在
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 、
甲苯 为溶剂,
反应 1.67h,
以82%的产率得到2-methoxycarbonylethyl (2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzoyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzoyl-1-thio-α-D-mannopyranoside